The bullet-proof material may be good for law-abiding citizens but does it create a new set of problems for law enforcement?Ballisticrete, which is described as a bullet-proof plaster, is made of magnesium, limestone and a secret binding ingredient the developers would not disclose.

Only a thin layer of this plaster is required to turn an average home into a fortress.

The developers are convinced eventually it will be a commonly used product for buildings and homes all around the world.

After seeing a demonstration, North Las Vegas Police Officer Chrissie Coon said she was impressed and believes it has potential as a safety tool.

"Even if this particular company is marketing this to a safe room inside of a school or some other commercial building, the idea behind that is you also have to train your employees, teachers and kids have to be trained,” Coon said. “Everybody has to be trained how to use this type of room.”

Coon is concerned that without proper education, it might provide a false sense of security. Nothing, she says, is ever a truly indestructible barrier.

"Law enforcement isn't trained to shoot through exterior walls, even to shoot through interior walls,” she said. “Law enforcement is trained to identify a target and eliminate it."

Still, many agree the product may have a host of applications. And Johnson and Dennis believe just a thin layer of their magic plaster is a small price to pay for a strong layer of defense against an armed assailant.

Johnson and Dennis have already contracted with several police and fire departments outside of Las Vegas, as well as the FBI.

They're also currently discussing projects with the Clark County School District and several casinos on the Las Vegas Strip.